#main{
    align-items: center;
	justify-content: center;
	height: 100vh;
	background-repeat: no-repeat;
	background-size: cover;
    background-image: url(asd.jpg);
}
#return{
    display: flex;
			}
			
			button {
			  border: 2px solid white;
			  background: transparent;
			  text-transform: uppercase;
			  color: white;
			  padding: 15px 50px;
			  outline: none;
			  overflow: hidden;
			  position: relative;
              background-color: gray;
			}
			
			span {
			  z-index: 20;  
			}
			
			button:after {
			  content: '';
			    display: block;
			    position: absolute;
			    top: -36px;
			    left: -100px;
			    background: white;
			    width: 50px;
			    height: 125px;
			    opacity: 20%;
			    transform: rotate(-45deg);
			}
			
			button:hover:after {
			  left: 120%;
			  transition: all 600ms cubic-bezier(0.3, 1, 0.2, 1);
			   -webkit-transition: all 600ms cubic-bezier(0.3, 1, 0.2, 1);
			}
#head1{
    width: 400px;
    height: 150px;
    /* background-color: yellow; */
    margin: auto;
}
#head{
    padding-top: 30px;
    height: 80px;
    /* background-color: red; */
    margin:auto;
    text-align: center;
    color: #cce7f8;
    font-size: 2.5rem;
    -webkit-animation: shining 0.5s alternate infinite;
    animation: shining 0.5s alternate infinite;
    letter-spacing: 20px;
    
}
@-webkit-keyframes shining {
    from {
        text-shadow: 0 0 10px lightblue, 0 0 20px lightblue, 0 0 30px lightblue, 0 0 40px skyblue, 0 0 50px skyblue, 0 0 60px skyblue;
    }

    to {
        text-shadow: 0 0 5px lightblue, 0 0 10px lightblue, 0 0 15px lightblue, 0 0 20px skyblue, 0 0 25px skyblue, 0 0 30px skyblue;
    }
}
#middle{
    width: 1300px;
    height: 200px;
    /* background-color: green; */
    
}
@keyframes animated-border {
    0% {
      box-shadow: 0 0 0 0 rgba(255,255,255,0.4);
    }
    100% {
       box-shadow: 0 0 0 20px rgba(255,255,255,0);
    }
  }
  #detection {
    width: 350px;
    height: 350px;
    background-color: gray;
    top: -200px;
    margin-left: 500px;
    animation: animated-border 1.5s infinite;
    font-family: Arial;
    font-size: 18px;
    line-height: 30px;
    font-weight: bold;
    color: white;
    border: 2px solid;
    border-radius: 10px;
    padding: 15px;
  }